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LM5025A - Active Clamp Voltage Mode PWM Controller

Description

The LM5025A is a functional variant of the LM5025 active clamp PWM controller.

The functional differences of the LM5025A are: The CS1 and CS2 current limit thresholds have been increased to 0.5V.

The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle.

Features

  • necessary to implement power converters utilizing the Active Clamp / Reset technique. With the active clamp technique, higher efficiencies and greater power densities can be realized compared to conventional catch winding or RDC clamp / reset techniques. Two control outputs are provided, the main power switch control (OUT_A) and the active clamp switch control (OUT_B). The two internal compound gate drivers parallel both MOS and Bipolar devices, providing superior gate drive characteristics. Thi.

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Datasheet Details

Part number LM5025A
Manufacturer National Semiconductor
File Size 728.53 KB
Description Active Clamp Voltage Mode PWM Controller
Datasheet download datasheet LM5025A Datasheet
Additional preview pages of the LM5025A datasheet.

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Full PDF Text Transcription

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December 2004 www.DataSheet4U.com LM5025A Active Clamp Voltage Mode PWM Controller LM5025A Active Clamp Voltage Mode PWM Controller General Description The LM5025A is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025A are: The CS1 and CS2 current limit thresholds have been increased to 0.5V. The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle. The internal VCC and VREF regulators continue to operate when the line UVLO pin is below threshold. The LM5025A PWM controller contains all of the features necessary to implement power converters utilizing the Active Clamp / Reset technique.
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